| A | B |
| Genetics | The science that studies how characteristics get passed from parent to offspring. |
| Genetic Factors | The general guidline of traits determined by a person's DNA. |
| Enviromental Factors | Those "non-biological" factors that are involved in a person's surroundings such as the nature of the person's parents, the person's friends, and the person's behavioral choices. |
| Spiritual Factors | The quality of a person's relationship with God. |
| Gene | A section of DNA that codes for the production of a protein or a portion of protein, thereby causing a trait. |
| Chromosome | A strand of DNA coiled around and supported by proteins, found in the nucleus of the cell. |
| Mitosis | The duplication of a cell's chromosomes to allow daughter cells to recieve the exact genetic makeup of the parent cell. |
| Interphase | The time interval between cellular reproduction. |
| Centromere | Constricted region of a chromosome and the point at which duplicate DNA strands attach themselves. |
| Mother Cell | A cell ready to begin reproduction, containing duplicate DNA and centriole. |
| Karyotype | The figure produced when the chromosomes of a species during metaphase are arranged according to size. |
| Diploid Cell | A cell whose chromosomes come in homologous pairs. |
| Haploid Cells | Cells that have only one of each chromosome. |
| Diploid Chromosome Number (2n) | The total number of chromosomes in a diploid cell. |
| Haploid Chromosome Number (n) | The number of homologous pairs in a diploid cell. |
| Meiosis | The process by which a diploid (2n) cell forms four gametes (n). |
| Gametes | Haploid cells (n) produced by diploid cells (2n) for the purpose of reproduction. |
| Virus | A non-cellular infectious agent that has two characteristics: (1) It has genetic material inside a protective protein coat. (2) It cannot reproduce itself. |
| Antibodies | Specialized proteins that aid in destroying infectious agents. |
| Vaccine | A weakened or inactive version of a virus that stimulates the body's production of antibodies which can destroy the virus. |